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Thiophene-modified covalent triazine framework material as well as preparation and application thereof

A technology of covalent triazine skeleton and thiophene, which is applied in the field of thiophene-modified covalent triazine skeleton material and its preparation and application, can solve the problems of poor effect, achieve high removal effect, long service life, and realize reuse Effect

Active Publication Date: 2021-09-28
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of poor treatment effect of refractory organic polluted wastewater (especially water polluted with bisphenol A), the present invention innovatively proposes a thiophene-modified covalent triazine framework material activated persulfate solution for advanced treatment. Oxidation technology, and the preparation method and application conditions of thiophene-modified covalent triazine framework materials

Method used

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  • Thiophene-modified covalent triazine framework material as well as preparation and application thereof
  • Thiophene-modified covalent triazine framework material as well as preparation and application thereof
  • Thiophene-modified covalent triazine framework material as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 Preparation of a thiophene-modified covalent triazine skeleton catalyst

[0029] (1) Uniformly mix terephthalonitrile (0.98g, 7.8mmol) and p-thienylbenzonitrile (0.02g, 0.16mmol) with a quartz mortar (50mL) at a molar ratio of 49:1;

[0030] (2) Put the rotor in a 15mL quartz tube and pass argon into it for 20 minutes to achieve the purpose of exhausting the air. On this basis, place the quartz tube in an ice water bath at -2°C and add trifluoromethanesulfonate acid (4 mL, 0.78 mmol);

[0031] (3) Turn on the magnetic stirrer, slowly add the mixed powder in (1) into the quartz tube in (2) to obtain the mixed solution;

[0032] (4) Under an argon atmosphere, the mixed solution in (3) was stirred vigorously (400-500r / min) in an ice-water bath for 110min;

[0033] (5) Place the quartz tube in (4) in an oven at 110°C for 30 minutes;

[0034] (6) After the reaction is completed, repeatedly wash with water and centrifuge to obtain the precipitate;

[0035] (7...

Embodiment 2

[0037] Example 2 Catalytic Oxidative Degradation of Bisphenol A

[0038] Put 100mL bisphenol A with an initial concentration of 10ppm in a 200mL reactor, then add 0.5mM potassium monopersulfate, add 0.02g of the catalyst prepared in Example 1 after ultrasonication, and irradiate with 300W xenon lamp and 150r / min Stirring reaction 90min, by image 3 It can be seen that the removal rate of bisphenol A reaches 100%.

Embodiment 3

[0040] The difference between this example and Example 1 is that in step (1), terephthalonitrile and p-thienylbenzonitrile were uniformly mixed with a ball mill at a molar ratio of 19:1. Other steps and parameters are the same as in Example 1.

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Abstract

The invention provides a thiophene-modified covalent triazine framework material which is prepared by the following steps: uniformly mixing p-phthalonitrile and p-thienyl benzonitrile to obtain mixed powder, adding the mixed powder into trifluoromethanesulfonic acid at the temperature of -5 to 0 DEG C in an inert gas atmosphere, conducting stirring for 100 to 120 minutes, conducting reacting for 30 to 40 minutes at the temperature of 110 to 120 DEG C, then conducting washing with water, conducting centrifugal separating to obtain a precipitate, and drying, grinding and screening the precipitate to obtain the product. The structure of the thiophene-modified covalent triazine framework material does not contain metal elements, the harm of metal dissolution is avoided, the thiophene-modified covalent triazine framework material is applied to catalytic oxidation degradation treatment of organic polluted wastewater, the removal effect is good, the utilization range of visible light and the application range of water with different pH values are widened, the thiophene-modified covalent triazine framework material is stable in structure and long in service life, and the repeated utilization of the catalyst can be realized.

Description

technical field [0001] The invention relates to a thiophene-modified covalent triazine skeleton material, a preparation method thereof, and an application in treating refractory organic polluted wastewater under visible light. Background technique [0002] Refractory organic polluted wastewater such as phenols, dyes, and medical wastewater has the characteristics of complex wastewater components, high pollutant concentration, difficult degradation, and great harm to the environment and human beings. Traditional wastewater treatment technologies cannot efficiently and deeply treat these wastewater. deal with. As a classic advanced oxidation technology, Fenton technology is more and more widely used in the treatment of refractory organic pollutants in water. However, it has a narrow pH range (generally pH 2-4), and will produce a large amount of iron sludge, H 2 o 2 The disadvantages are low utilization rate, difficult catalyst recovery and short catalyst life. Therefore, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02B01J35/00C02F1/30C02F1/72C02F101/30C02F101/34C02F101/36C02F101/38
CPCB01J31/0244B01J31/0271C02F1/30C02F1/725C02F2305/10C02F2101/345C02F2101/308C02F2103/003C02F2101/36C02F2101/38B01J35/39
Inventor 曾滔郦淑琦宋爽
Owner ZHEJIANG UNIV OF TECH